Dispensing container for fluid under pressure with manually operated, spring-biased valve and dashpot for delaying closing action thereof



Aug. 8, 1950 R. STEVENSON 2,518,259

' DISPENSING CONTAINER FOR FLUID UNDER PRESSURE WITH MANUALLY-OPERATED,SPRING-BIASED VALVE AND DASHPOT FOR DELAYING CLOSING ACTION THEREOFFiled Aug. 9, 1945 mvsm-oa 30/6610 149 we 0/:

ATTORNEYS Patented Aug. 8, 1950 UNITED STATES PATENT GFFICE RobertStevenson, Harrington, R. L, :assignor to Merit Engineering, Inc.,-acorporation of Rhode Island Application Au ust 9, 1945 Sfial N0.6fl9,.7'87

1% Claims. I

This invention relates to a device for dispensing fluids either of agaseous or liquid nature, which fluids are in a container under apressure greater than that of atmospheric.-

Fluids are usually dispensed from a container in which they are carriedeither by shaking the fluid out of the container or by pumping the fluidout of the container by intermittently applying pressure through someactuating means thereto. Other fluids are dispensed from a containerwhentheyare under pressure by some sort of a valve control conduitthrough which the fluid is forced by the pressure in. the container Bothof these means are subject to manual op oration in that they must bemanually expelled from thecontainer or the value which controls thecontainer must be closed after a predeter mined time by manualoperation.

One of the objects :of this invention is to provide a dispensing devicewhich by reason of the pressure in the container, discharge for apredetermined length of time,- the length of which will be dependentupon the construction of the device.

Another object of this invention is to provide a device which willdischarge through a predetermined length of time and in an amount whichwill be de endent upon the opening or orifice through which .the fluidis forced.

Another object of this invention is to provide an arrangement so thatthe discharge will be initiated by manual pressure but will beautomatically stopped after a predetermined length of time.

Another object of this invention is toprovide for a device which willcontrol the discharge by use of .the fluid which .is discharged, thatis,- the fluid which "is discharged will provide the pressure for theoperating mechanism of the device.

With these and other objects in view, the invntion consists of .certainnovel featuresof construction, as will .be more :iu'lly described andparticularl pointed in the appended claims.

In proceeding with this invention, I provide a container for the fluidto" be dispensed which is of a sufficient strength "td hold fluid whichwill be under several atmospheres of ressure A valve is provided in thiscontainer which is so constructed that when pressure is applied to aportion of the valve the valve will be forced open so as to permit thefluid to be discharged by reason of its own pressure. Resilient meansare present to close the valve as soon as pressure is released, but uponthe opening of the valve a dash V pot is brought into play whichreceives some of the fluid which is .in the container and which isforced out of the dash pot through control-led small passages so thatthe pressure which tends to close the valve will be delayed in soclosingthe valve until a predetermined length of time has elapsed, throughwhich lengthof time a pre-' determined quantity of the flu-id to bedispensed is discharged from the container. The amount. of fluid to bedischarged will depend upon the size of the orifice through which thefluid is to be forced. Thus, I may control the amount of fluid.dispensed by reason of the size of the discharge opening.

With reference to the drawing, Hidesignates the lower part of aspherical container and H the upper part thereof. These parts telescopeas at E3 and are secured together :by solder, blEW ing, 01" suchequivalent means at M. A thread-ed opening 1:5 with an inwardlyextending boss ii -'3 is providedin the lower part tit-0f the containerand receives a valve 11 which is threaded into the opening t5 and isprovided with an intermed-i ate wall 18 having an opening 9 closed by aball 20 pressed against this closure by a spring 24 abutting against aplug 22 in the threaded opening' 23 atone end thereof. An opening 124 isprovided in this plug. some means are threaded into the internal portion12:5 of the valve for foreing or 'fluid into the' container until: acertain pressure exists, such :for instance as possibly 25 9 lbs. Thefluid under pressure will be in the form of a Vapor 2G;

The other or upper part i 1| of the container is provided with anopening 3'8 having an internally extending collar .3! for the receptionof ;a time valvedesignated generall 32 and comprising a body 33 which issecured in the opening and to the collar 31 by some sort of solder :orbrazing means :34.

This body is provided with a bore :34 and a larger bore 3.5. This largerbore 35 receives a plate 36 having an opening- 31' therein, the loweredge of which'provides a valve seat 38 which is closed by a ball valve39. A plunger 39" is slidable in the bore '34, has a cup 49 at its upperend to receive the-ball, and is urged upwardly by a spring ii whichabuts, as at 42', upon a bracket which is fixed to the body 33 of thevalve. This plunger 39 is hollow as at 43 and is provided with anextension tube 44 which projects centrally through the spring 4| andmoves with the plunger. A cup 45 is also secured to this plunger to movewith it and slidably' receives the portion 46 of the body 33. limited(ischarge of fluid which may exist in the There is suflicient clearanceto permit a portion 48 below the valve body portion 46. Fluid isadmitted to the portion 48 of the cup through openings 49 and 50, theopening 49 being closed by a ball valve urged toward its seat by aspring 52. I

The bore 35 has a block 55 inserted in it, which block engages a washer56 which is in contact with the plate 36 and has an opening in itregistering with the opening 37 in the plate 39. This block has achamber 5? from which there extends a conduit 58 registering with aconduit 59, and one of these conduits will be of a predetermined size soas to govern the amount of discharge of the fluid within the containertherefrom. The larger the diameter the more fluid will be dischargedduring the time that the valve is open. A stem 60 is slidably mountedthrough the bore '6! in the block 55 and a round soft resilient packing62 surrounds the stem 60 so as to prevent the escape of fluid along thesurface of the stem. An abutment 63 of a size greater than the bodyportion of the stem is present to limit the movement of the stem or thesoft packing 92 therealong. The stem is reduced as at 64 and of a sizeso as to loosely extend through the opening 31" of the plate 36 toengage the ball valve 39 so that when pressure is exerted on the fingerpiece 95 the stem may be forced downwardly to apply pressure on the ballvalve 39 and force it from its seat 38.

When the ball valve 39 is forced downwardly by reason of pressure on thefinger piece 85 the opening 31 will permit fluid in the container topass upwardly through the tube M, as shown by arrow 66, and pass outthrough the openings 61 in the plunger 39 thence up through the spaces68 about the plunger at its upper end, through the passage or opening31, and thence out through the conduits 58 and 59 to the atmosphere.

At the same time that the plunger is forced downwardly, the cup 25 isalso forced downwardly and by reason of the increased space or volume at93 caused by movement of the cup downwardly away from the body part 46of the valve, fluid will pass inwardly through the opening 99 andthrough the opening 50 to fill the space 68 full of fluid. Thereafterthe pressure of the spring 41 will tend to move the cup upwardly, but byreason of the fluid in the area 48, this cup cannot be moved upwardlyuntil this fluid is expelled from the chamber 48. The only way that thisfluid may be expelled will be through the sliding fit at 6? between thecup 45 and the body 55. The area of this space between these two willdetermine the rate at which the spring M will raise the plunger and thecup 45 upwardly until the ball 39 engages the valve seat 38 and closesthe valve. Thus the area or size of the opening space will control thetime action of the operation of the valve.

I claim:

1. In a dispensing device in the form of a sealed container having aninlet opening and a discharge opening, a valve for controlling saiddischarge opening comprising a valve body secured to said. dischargeopening, a conduit through said body for the passage of fluid from saidcontainer, a valve seat in said conduit, a ball closure for said seat,manually operable means for moving said closure from said seat,resilient means for moving said closure into engagement on said seat andmeans for delaying the action of said resilient means including achamber having a wall thereof movable with said closure when moving thesame from said seat for enlarging said chamber, an inlet port to saidchamber, an outlet from said chamber and a resiliently movable valvemeans for controlling the passage of fluid through said ports.

2. In a dispensing device in the form of a sealed container having aninlet opening and a discharge opening, a valve for controlling saiddischarge opening comprising a valve body secured to said dischargeopening, a conduit through said body for the passage of fluid from saidcontainer, a valve seat in said conduit, a ball closure for said seat,manually operable means for moving said closure from said seat,resilient means'ior moving said closure into engagement on said seat andmeans for delaying the action of said resilient means including achamber having a wall thereof movable with said closure when moving thesame from said seat for enlarging said chamber, an inlet port to saidchamber and outlet port from said chamber and a spring urged valve forcontrolling the passage of fluid through said ports.

3. In a dispensing device in the form of a sealed container having aninlet opening and a discharge opening, a valve for controlling saiddischarge opening comprising a valve body secured to said dischargeopening, a conduit through said body for the passage of fluid from saidcontainer, a valve seat in said conduit, a ball closure for said seat,manually operable means for moving said closure from said seat,resilient means for moving said 010- sure into engagement on said seatand means for delaying the action of said resilient means including achamber having a wall thereof movable with said closure when moving thesame from said seat for enlarging said chamber, an inlet port to saidchamber, an outlet port from said chamber and means for controlling thepassage of fluid through said ports.

ROBERT STEVENSON.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Nm'nber Name Date 39,086 Williams June 30, 1863420,327 Blessing Jan. 28, 1890 506,221 Gilcher Oct. 10, 1893 517,550Messinger Apr. 3, 1394 676,009 Ripper June 11, 1901 698,539 Mason Apr.29, 1902 814,975 Mason Mar. 13, 1906 1,041,445 Dittrich Oct. 15, 19121,626,939 Kooperstein May 3, 1927 FOREIGN PATENTS Number Country Date22,682 Great Britain Dec. 31, 1903 of 1903

